Burner



Dec. 9, 1924 1,518,766

v W. F. YERS BURNER Filed Oct. 19, 1925 described in detail in the following speci-` Patented Dec. 9, 1924.

` UNITED STATES WILLIAM r. Ynns, or MINNEAPOLIS, MINNEso'rA.

BURNER.

Application filed October 19, 1923. Serial No. 669,571.

To all whom t may concern.'

Be it known that I, VILLJAM F. YnRs, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Burners, of which the following is a specification.

This invention relates to liquid fuel burners for stoves, furnaces and the like, and the main Objectis to provide a practical, efficient and improved oil burner of the type shown and described in Patents #1,163,221 and #1,181,748 to Wilbur F. Day, which patents have been assigned by mesne assignments to me, and to provide other advanced improvements over the prior art as disclosed in other patents issued yto said l/Vilbur F. Day and other inventors, which patents are of record in the United States Patent Oiiice. The specific improvements referred to will now be set forth and iication, the structure embodying the invention being illustrated in the accompanying drawing, wherein:

Fig. 1 is a top or plan view of the burner, one of the delectors being swung aside for purpose of illustration.

Fig. 2 is a vertical sectional view of the burner as seen substant-ially on the line 2-2 in Fig. 1, and showing the position of the burner with respect to a rectangular base member.

Fig. 3 is an elevation of a stove portion, having portions broken out to illustrate the position of the burner with respect to the stove parts, and showing the burner partly in section.

-The burner is of the double type having aretort and penetrating chamber at each end of the base. It will therefore be suficient to describe only one burner unit, the corresponding parts ofthe opposite unit being indicated, however, by the same reference characters. Referring, for the moment, to Fig. 3, 5 designates a stove or range of common and well known construction, having an oven wall 6, a grate 7, a water reservoir 8 and a top 9. Upon the grate 7 I place a rectangularly shaped sheet metal baselO, open at its top and bottom, so as to allow a free current of air to flow upwardly therethrough after first passing through a draft plate 1l and the grate 7. The space about the base 10 is lilled in with ashes 12 so as to confine all the draft to the burner within the base.

The' burner structure proper consists of av cast plate 13 having (at cach end) a mixing chamber 14 consisting of an upwardly and inwardly tapered wall which is integral with the plate 13.' The plate 13 is further pro-vided about its edge with integral flanges 15, which project above and belowit, and at the rear of the plate is provided an integral lug 16 having a pin 17 upon which is rotatably mounted an arm 18 having an integral spreader plate 19 at its upper and inner end. This arm 18 may be easily swung out of t-he way, for cleaning purposes, as indicated at the right in Fig. 1, but is checked when swungy over the mixing chamber by an integral lug 20, which stops against the flange -15 when the spreader is directly over the chamber.

The generating of the fuel, which may be kerosene, distillate or other crude petroleum, is accomplished by a tubular generator or retort consisting of a vertical portion 21, rigidly secured in the plate 13 as at 22, a long horizontal portion 23, extending from the vertical portion 21 to a point forward of the mixing chamber 14, and a short curved portion 24, which connect-s at one endk with the portion 23 and extends with its other end into one side ofthe mixing chamber. The linner end of the portion 24 is rconsiderably lower than the portion 23, and is provided with a vent or pin-hole opening 25, which is centrally arranged with respect to the mixing chamber. Below the retort portion within the chamber 14 is provided a deiiector bridge or wall 26 (see Fig. 3) the object of which is to deflect the upcoming draft of air against the walls of the mixing chamber and keep it cool and to prevent such air from directly striking and cooling the enerator, as set forth in the Day Patent o. 1,163,221. v

The generator 21 is supplied with fuel by a liquid supply tube or hollow wire 27, having a control valve 28a. The generator and the tube are connected by a trap or well 28, having an upstanding nipple 29, as shown in Fig. 2, which is avery valuable and important element in the combination as hereinafter claimed, as it permits the accumulation of a sufficient amount of liquid fuel in the well to cool the surrounding parts and act as a condenser for the superheated @as when such gas is generated and accumu ates faster than it can escape through the vent 25 and burn. This action can readily be appreciated by referring to and comparing the structure shown in Fig. 5 of the Day Patent #1,163,221. In that structure, as the generator and the parts 19, 21 and 20` become heated to the extent that there is formed a surplus amount of gas, the reaction of such gas tends to force the liquid fuel back into the tubes 25. It is also found, upon exhaustive tests, that when this takes place the normal generation of gas ceases and as the lame'then rapidly consumes the gas volume generated, it does so so rapidly that it draws it up out of the tubes 25 .fa-ster than the heavy liquid fuel can follow. This tends to rarify the gas to suoli an extent that the flame will go out, which of course is very objectionable, as the burner must under many circumstances then be relighted many times within the course of a few hours time.

This objection has been entirely eliminated in the present structure by means o-f the well 28-29, as it is found that the normallevel of the liquid fuel will remain about as sho-wn in Fig. 2, and under such circumstances no ygas can be forced back into the tube 2'? until the entire volume of liquid above the nipple 29 has preceded it, and by that time itis found that the volume of liquid in the well isrsufficient to have condensed the oversupply of gais', thus completely normalizing the gas pressure in thegenerato-r and effecting a constantly uniform flame under all conditions. The well also acts as a Itrap to prevent any foreign matter in the generator from falling back into the small tube 27.

It will be noted in Figs` 2 and 3 that the burner, by reason of lugs 30, is caused to rest upon the base 10 in an inclined position, the front (or right) side being a little higher than the opposite side, the purpose of which isto cause the parts to rest in a proper position with respect to the line of draft and to the parts of 4the conventional kitchen stove or range. Thus, it is desirable to keep the plane of the flame under the spreader 19 as nearly parallel as possible with the line of the air draft supplied to it. It will be noted that although much of the air comes up through the mixing chamber, as in the Day patent above referred to, I also provide auxiliary air ports 31, in the rear part of the plate 13, through which air may be supp-,lied tothe flame. It will also he noted that the generator member 28 lies only a short space below the plane of the spreader 19. My. object in this arrangement is to place the generator immediately below the flame so as to receive the benefit eration and combustion of gas will follow.

This of course is impossible in the Day Patent #1,163,221 Where no auxiliary air ports lare provided and where the generator is on the rear side of the mixing chamber.

It .is understood that suitable modifica.- tions may be made in the general design and structural details of my invention, as herein disclosed, provided, however, that such modifications come within the spirit and scope of the appended claims. Having now therefore fully sho-wn and described my invention in detail, what I claim to be new and desire to protect by United States Letters Patent is:

1. The combinati-on with a burner having f a base plate with a mixing chamber thereon, of a spreader, means arranged near the mixing chamber and below the level of the upper end thereof for movably mounting the spreader so as to permit it to be swung over the mixing chamber, yand a stop member on the said means for engagement with the base for stopping the swinging movement of the spreader when the same reaches a position directly over the mixing chamber.

2. The. combination with a b-urner having a base plate and a mixing chamber thereon, of a spreader arm having aspreader at one end, means for pivotally mounting the other end of the arm to the. plate, and a lug projecting from the arm for stopping engagement against the plate.

8. In a burner, a base plate having a ing chamber thereon, a tubular generator extending with one end into the mixing chamber `and with the other end down through the base plate, an oil supply tube, a receptacle connecting the oil supply tube to the generator immediately below the base plate, a nipple extending from the oil tube up into the receptacle, whereby an accumulation of oil may be reserved in the receptacle and around and over the nipple to act as -a condenser for gas which is generated in the generator faster than it can be burned in the mixing chamber.

In testimony whereof I aztiix my signa- 

